diff --git a/configure.ac b/configure.ac
index 8fb6491d05..a72ddc8acf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,7 +16,7 @@
 #
 m4_define([bind_VERSION_MAJOR], 9)dnl
 m4_define([bind_VERSION_MINOR], 21)dnl
-m4_define([bind_VERSION_PATCH], 9)dnl
+m4_define([bind_VERSION_PATCH], 10)dnl
 m4_define([bind_VERSION_EXTRA], -dev)dnl
 m4_define([bind_DESCRIPTION], [(Development Release)])dnl
 m4_define([bind_SRCID], [m4_esyscmd_s([git rev-parse --short HEAD | cut -b1-7])])dnl